Programmable Safety Systems
PSS-Range
PSS SB TESTER
Operating Manual
Item No. 20 757-03
The spirit of safety.
All rights to this manual are reserved by Pilz GmbH & Co. Copies may be made for internal
purposes.
While every effort has been made to ensure that the information in this manual is accurate,
no responsibility can be accepted for errors or omissions contained within it.
We reserve the right to amend specifications without notice. We are grateful for any
feedback on the contents of this manual.
The names of products, goods and technologies used in this manual are trademarks of the
respective companies.
Contents
Introduction 1-1
Validity of documentation 1-1
Overview of documentation 1-1
Definition of symbols 1-2
Overview 2-1
Range 2-1
Safety 3-1
Intended use 3-1
EMCD 3-1
Warranty and liability 3-1
Disposal 3-2
Operation 4-1
Supply 4-1
Charging the battery 4-1
Commissioning 4-2
Switching on 4-2
Setting the contrast 4-3
Switching the backlight on/off 4-3
Setting the time and date 4-4
Setting the signal runtime 4-5
Calibration 4-5
Performing the tests 4-6
Saving the test results 4-6
Uploading the test results to a PC 4-7
Deleting the test results 4-7
Operating Manual: PSS SB TESTER 1
Contents
Tests/Measurements 5-1
Connection test 5-2
Performing the connection test 5-2
Separate test: Resistance between CAN_H and CAN_L 5-4
Separate tests: Short circuits between the bus cable wires 5-5
Screening test 5-6
Performing the screening test 5-6
Length measurement 5-9
Performing the length measurement 5-13
Signal test 5-16
Performing the signal test 5-16
Separate test: Measuring the voltage at Vcc 5-17
Separate test: Testing the transmission rate 5-18
Separate tests: Testing the electrical signal level 5-19
Separate tests: Testing the signal edges 5-20
Real-time mode 5-21
Performing the real-time measurement 5-21
Software 6-1
System requirements 6-1
Installation 6-1
Starting the software 6-1
Fault Diagnostics 7-1
Technical Details 8-1
2 Operating Manual: PSS SB TESTER
Introduction
This operating manual is intended to give users all the information they
need to use the PSS SB TESTER.
To fully understand this manual you will need to be conversant with the
information found in the general documentation for the SafetyBUS p PSSrange. In particular you should read the SafetyBUS p System Description
and SafetyBUS p Installation Manual.
This documentation is intended for instruction and should be retained for
future reference.
Validity of documentation
This documentation is valid for the PSS SB TESTER from Version 2.0.
It is valid until new documentation is published. The latest documentation is
always enclosed with the unit.
Overview of documentation
The manual is divided into the following chapters:
1 Introduction
The introduction is designed to familiarise you with the contents,
structure and specific order of this manual.
2 Overview
This chapter provides a brief overview of the unit’s most important
features and its application range.
3 Safety
This chapter must be read as it contains important information on
safety regulations and intended use.
4 Operation
This chapter contains detailed information on how to operate the unit.
5 Tests/Measurements
This chapter describes the separate tests than can be performed
using the PSS SB TESTER.
6 Software
This chapter describes the software used to read the test results.
Operating Manual: PSS SB TESTER 1-1
Introduction
7 Fault Diagnostics
When a fault is detected on SafetyBUS p, this chapter helps you find
the source of the fault and rectify it.
8 Technical Details
Definition of symbols
Information in this manual that is of particular importance can be identified
as follows:
DANGER!
This warning must be heeded! It warns of a hazardous situation that
poses an immediate threat of serious injury and death and indicates
preventive measures that can be taken.
WARNING!
This warning must be heeded! It warns of a hazardous situation that
could lead to serious injury and death and indicates preventive
measures that can be taken.
CAUTION!
This refers to a hazard that can lead to a less serious or minor injury plus
material damage, and also provides information on preventive measures
that can be taken.
NOTICE
This describes a situation in which the unit(s) could be damaged and also
provides information on preventive measures that can be taken.
INFORMATION
This gives advice on applications and provides information on special
features, as well as highlighting areas within the text that are of particular
importance.
1-2 Operating Manual: PSS SB TESTER
Overview
The PSS SB TESTER is a hand-held device that can be used to carry out
various tests and measurements on SafetyBUS p. Each test may comprise
several separate tests.
• Connection test
- Checks the terminating resistors
- Checks the bus cable wires for short circuits
• Screening test
- Checks the cable screening for open circuits
• Length measurement
- Measures the length of the bus line
- Determines the location of a short circuit between CAN_H and CAN_L
• Signal test
- Tests the transmission rate
- Tests the electrical signal level on the lines CAN_H and CAN_L
- Tests the signal edges on the lines CAN_H and CAN_L
Range
• Real-time mode
- Measures the bus load
- Measures error rate, failure rate and number of errors
Once a test has been completed, the results can be read directly from the
device’s display or can be uploaded to a PC using the software provided.
The PSS SB TESTER is supplied in a carry case. Items supplied are as
follows:
• PSS SB TESTER incl. battery
• Shorting plug for the screening test
• Adapter cable for connecting the PSS SB TESTER to SafetyBUS p
• USB cable for connecting the PSS SB TESTER to a PC
• Battery charger
• Operating Manual: PSS SB TESTER
• CD:
- Software for recording the test results on a PC
- Operating manual in PDF format
- Acrobat Reader
Operating Manual: PSS SB TESTER 2-1
Overview
1
2
F2F1 F3
Fig. 2-1: View
ON
OFF
HLPESC VAL
4
3
1: SafetyBUS p interface
2: Single-colour graphic display
with backlight
3: Operator panel
4: USB port for uploading the test
results to a PC
2-2 Operating Manual: PSS SB TESTER
Safety
Intended use
The PSS SB TESTER is designed for use in SafetyBUS p networks.
Specific data for the PSS SB TESTER is given in the chapter entitled
“Technical Details”. Use of the device outside the specifications given here
will be deemed as improper use.
Any component, technical or electrical modifications carried out will be
deemed as improper use.
Use of the PSS SB TESTER outside the areas described in this manual
will be deemed as improper use.
Intended use includes following the information in this manual.
The PSS SB TESTER is not a safety-related device.
EMCD
The device is designed for use in an industrial environment. Interference
may occur if used within a domestic environment.
Warranty and liability
All claims to warranty and liability will be rendered invalid if
• The module was used contrary to the purpose for which it was intended
• Damage can be attributed to not having followed the guidelines in the
manual
• Operating personnel are not suitably qualified.
• The housing was opened
• Any type of modification has been made (e.g. exchanging components
on the PCB boards, soldering work etc.).
Operating Manual: PSS SB TESTER
3-1
Safety
Disposal
The module must be disposed of properly when it reaches the end of its
service life.
3-2 Operating Manual: PSS SB TESTER
Operation
Supply
The PSS SB TESTER is supplied via a battery, which is located in the
back of the housing.
A charged PSS SB TESTER can be operated for 1 to 2 hours, depending
on the application conditions. If the battery charge drops to a particular
value during testing, the message “Charge battery” will be displayed and a
beep will sound. If the battery charge becomes so weak that the supply
can no longer be guaranteed, the PSS SB TESTER will switch off
automatically. The battery will need to be recharged. This takes approx. 1.5
hours.
INFORMATION
When the PSS SB TESTER is used for the first time or after storage
periods of more than 6 months, the battery will need to be charged for at
least 4 hours.
Charging the battery
• Plug the charger’s mains connector into a socket (110/230 VAC, 50 Hz).
• Take the PSS SB TESTER battery and plug it into the charger. The
charger is designed in such a way that the battery can only be inserted at
the correct polarity.
The start of the charging process is displayed via a red LED on the
charger’s connector (100 % on).
When the main charge is complete, the charger automatically switches to
“Conservation charging” mode and the LED flashes (25 % on, 75 % off).
If the main charge cannot be completed within 2 ½ hours, the charger
automatically switches to “Conservation charging” mode.
If the battery is extremely depleted, the LED will flash (50 % on, 50 % off)
when the battery is plugged into the charger. The battery is then charged
with a reduced charging current until the battery is regenerated and can be
switched to “normal” main charge mode.
Operating Manual: PSS SB TESTER 4-1
Operation
INFORMATION
The battery should not be left in the charger over a long period of time
(several weeks).
• Charge the battery until the LED on the charger flashes (25 % on, 75 %
off)
• Remove the battery and place in the PSS SB TESTER.
Commissioning
Switching on
INFORMATION
Before the PSS SB TESTER is used for the first time, the battery must be
charged for at least 4 hours.
The PSS SB TESTER is switched on via the “ON/OFF” button.
When it is switched on, the unit description “PSS SB TESTER” and its
version is displayed briefly.
The “Start” window then appears. From this window you can access
various menus.
Key to the symbols and function of the buttons in the “Start” window:
: Select test/measurement
: Set transmission rate
F1: Display unit version
F2: Make one of the following settings:
- Set the contrast
- Switch the backlight on/off
- Set the time and date
- Set the signal runtime
- Calibration
F3: Save or delete test results
HLP: Call up help
ESC: Cancel function/close window
VAL: Carry out function
4-2 Operating Manual: PSS SB TESTER
Setting the contrast
• Press F2 in the “Start” window.
• The “Settings” window opens. Use the arrow keys to move the cursor to
the symbol for “Contrast” and press VAL.
• Now you can use the “left” and “right” arrow keys to increase or reduce
the display’s contrast.
• Press VAL to save the setting.
The current setting is saved. A message confirms that the setting has been
saved. The “Settings” window is then displayed again. You can return to
the “Start” window by pressing ESC.
The contrast setting is stored in a memory that is supplied by the battery. If
the battery is removed, the contents of the memory will be retained for 10
minutes. If it takes longer for the battery to be replaced, the contents of the
memory will be lost.
Switching the backlight on/off
• Press F2 in the “Start” window.
• The “Settings” window opens. Use the arrow keys to move the cursor to
the symbol for “Backlight” and press VAL.
• Two symbols will appear.
If you wish to switch the backlight on, use the arrow keys to highlight the
symbol.
If you wish to switch the backlight off, highlight the symbol.
• Press VAL to save the setting.
The current setting is saved. A message confirms that the setting has been
saved. The “Settings” window is then displayed again. You can return to
the “Start” window by pressing ESC.
Operating Manual: PSS SB TESTER 4-3
Operation
The information on the backlight is stored in a memory that is supplied by
the battery. If the battery is removed, the contents of the memory will be
retained for 10 minutes. If it takes longer for the battery to be replaced, the
contents of the memory will be lost.
Setting the time and date
• Press F2 in the “Start” window.
• The “Settings” window opens. Use the arrow keys to move the cursor to
the symbol for “Time and Date” and press VAL.
• The time and date are displayed. The ex-works setting is 01.01.2000 for
the date and 00:00 for the time.
The weekday is highlighted within a grey field. Use the “up” and “down”
arrow keys to set the required weekday.
You can then use the “right” arrow key to move the grey field to the
month; set the required month using the “up” and “down” arrow keys. Do
the same for the year, hour and minute.
• Press VAL to save the setting.
The current setting is saved. A message confirms that the setting has been
saved. The “Settings” window is then displayed again. You can return to
the “Start” window by pressing ESC.
The setting is stored in a memory that is supplied by the battery. If the
battery is removed, the contents of the memory will be retained for 10
minutes. If it takes longer for the battery to be replaced, the contents of the
memory will be lost.
4-4 Operating Manual: PSS SB TESTER
Setting the signal runtime
To measure the length of the bus cable you will need to enter the signal
runtime. The ex-works setting for the signal runtime is 4.5 ns/m. This value
is valid for the Pilz standard cable for SafetyBUS p (order no. 311 070). If
you use a cable with a different signal runtime, you will need to amend the
set value.
• Press F2 in the “Start” window.
• The “Settings” window opens. Use the arrow keys to move the cursor to
the symbol for “Signal runtime” and press VAL.
• Use the arrow keys to enter the password “7041” and press VAL.
• The signal runtime is displayed. Use the arrow keys to set the signal
runtime to the required value.
• Press VAL to save the setting.
The current setting is saved. A message confirms that the setting has been
saved. The “Settings” window is then displayed again. You can return to
the “Start” window by pressing ESC.
Calibration
The setting is stored in a memory that is supplied by the battery. If the
battery is removed, the contents of the memory will be retained for 10
minutes. If it takes longer for the battery to be replaced, the contents of the
memory will be lost.
Calibration is reserved for Pilz customer service.
Operating Manual: PSS SB TESTER 4-5
Operation
Performing the tests
All the tests are described in detail in the chapter entitled “Tests/
Measurements”. This section is only intended to explain how to save,
upload and delete the test results.
Saving the test results
With the exception of the results for real-time mode, all the test results can
be saved.
The connection test, screening test, signal test and length measurement
each have a specific memory area available within the PSS SB TESTER.
This division within the memory enables tests to be performed at different
times; the respective results can be saved and then all the results can be
uploaded to the PC together. When you save the results of a test, the old
data in the test's memory area is overwritten.
Example: The user performs the connection test, saves the results and
switches off the tester. Two hours later the user then performs the signal
test, stores the results and again switches off the tester.
The current results from the connection test and signal test are saved
within the tester, along with the results from an earlier length
measurement.
• After carrying out a test, switch to the “Start” window and press F3.
• The “Memory” window opens. Use the arrow keys to move the cursor to
the symbol for “Save” and press VAL.
• The “Save” window opens. Press VAL.
The test results are saved. A message confirms that the results have been
saved. The “Start” window is then displayed again.
The test results are stored in a memory that is supplied by the battery. If
the battery is removed, the contents of the memory will be retained for 10
minutes. If it takes longer for the battery to be replaced, the contents of the
memory will be lost.
4-6 Operating Manual: PSS SB TESTER
Uploading the test results to a PC
The saved results can be uploaded to a PC, where they can be saved as a
text file.
• Connect the PSS SB TESTER to a USB port on the PC.
• Start the “PSS SB TESTER” software (see Chapter 6).
• Click the “Upload” button.
• The “Save as” window is opened. Enter the directory and the name of the
file in which the test results are to be saved.
• The data is uploaded and saved. When the upload is complete, close the
“Upload of the results” window.
The file containing the results is displayed in a standard text editor.
Deleting the test results
Before each series of tests, the memory containing the test results should
be cleared to avoid mixing up new results with the results from previous
tests. Then it will no longer be possible to upload results to the PC.
• Press F3 in the “Start” window.
• The “Memory” window opens. Use the arrow keys to move the cursor to
the symbol for “Delete” and press VAL.
• The “Delete” window opens. Press VAL.
The test results are deleted. A message confirms that the results have
been deleted. The “Start” window is then displayed again.
Operating Manual: PSS SB TESTER 4-7
Operation
Notes
4-8 Operating Manual: PSS SB TESTER
Tests/Measurements
The PSS SB TESTER can be used to perform various tests and
measurements on SafetyBUS p:
• Connection test
• Screening test
• Length measurement
• Signal test
• Real-time measurements
These tests and measurements are described in this chapter.
To be able to carry out the measurements, the PSS SB TESTER will need
to be added to SafetyBUS p. The PSS SB TESTER therefore has a
SafetyBUS p interface. The 9-pin connector on the supplied cable is
attached to this interface. The adapter on the other end of the cable is
attached between a SafetyBUS p device and the SafetyBUS p cable. The
point at which the PSS SB TESTER must be added depends on the test or
measurement that is to be performed.
Female 9-pin D-Sub connector
1: n.c.
2: CAN_L
1
5
Fig. 5-1: SafetyBUS p interface assignment
6
9
3: CAN_GND
4: n.c.
5: CAN_SHLD
6: n.c.
7: CAN_H
8: n.c.
9: Vcc
n.c. = not connected
Operating Manual: PSS SB TESTER 5-1
Tests/Measurements
Connection test
The connection test comprises the following separate tests:
• Measuring the resistance between CAN_H and CAN_L
• Test for short circuit between CAN_H and Vcc
• Test for short circuit between CAN_L and Vcc
• Test for short circuit between CAN_H and CAN_GND
• Test for short circuit between CAN_L and CAN_GND
• Test for short circuit between CAN_H and CAN_SHLD
• Test for short circuit between CAN_L and CAN_SHLD
The connection test corresponds to a resistance measurement.
The tester also detects components between the cables that are not
resistors (diodes, capacitors, ...).
Where resistance values are low (0 ... 1000 Ohm), the measuring accuracy
of the tester reaches the order of ± 5 %, if no capacitors or diodes are
found.
Performing the connection test
• Add the PSS SB TESTER at any point within SafetyBUS p.
• Switch on the PSS SB TESTER.
• Highlight the symbol in the “Start” window and press VAL.
• The “SafetyBUS p” window opens, in which you can select the test/
measurement. Use the arrow keys to move the cursor to the symbol for
“Connection test” and press VAL.
• The following question is displayed: “SafetyBUS p is switched off?”.
Make sure that SafetyBUS p is switched off, i.e. all devices on
SafetyBUS p must be switched off and there must be no voltage present
on the “Vcc” line.
Then press VAL.
5-2 Operating Manual: PSS SB TESTER
The PSS SB TESTER then checks whether “Vcc” is without voltage. If this
is the case, the test is performed and the following message appears on
the display: “Connection test in progress”.
If voltage is present at “Vcc”, the test will not be carried out because the
test results could be corrupted or the Tester could be damaged.
NOTICE
While the connection test is in progess, no voltage must be supplied to the
“Vcc” pin and SafetyBUS p must not be switched on, otherwise there is the
risk of the test results being corrupted or the Tester being damaged.
When the test is complete, the “Results” window is displayed. Each line
corresponds to a separate test. A code is entered at the end of each line :
- “x”: Negative test result
- “v”: Positive test result
- “c”: Test was corrupted due to capacitance between the cables. The
measured values should not be viewed as accurate.
- “d”: Test was corrupted due to a diode or similar component between the
cables. The measured values should not be viewed as accurate.
To look at the result of a single test in more detail you can move the cursor
to that test and then press VAL.
You can return to the “Results” window by pressing ESC.
Operating Manual: PSS SB TESTER 5-3
Tests/Measurements
Separate test: Resistance between CAN_H and CAN_L
Abbreviation for this separate test in the “Results” window:
R CAN_H/CAN_L
Measurement of the resistance between CAN_H and CAN_L. You can use
this measurement to detect whether the terminating resistors are present
and whether they are the correct size (120 Ω each).
In the upper section of the detailed display of results from this separate
test, four pieces of information are displayed: the lower limit, the upper
limit, the measured value and the result.
As the parallel connection of two 120 Ω ferrule resistors should have a
resistance value of 60 Ω, a lower limit of 50 Ω and an upper limit of 85 Ω is
pre-assigned. If the value measured on the resistor lies between the upper
and lower limit, the resistor will be assessed as “OK”.
Example: lower limit value: 50 Ω
upper limit value: 85 Ω
measured value 119.3 Ω
result: not OK
If you scroll down in the detailed display you will be able to see whether
the circuit between CAN_H and CAN_L is open, i.e. whether or not there is
a terminating resistor.
Three pieces of information are displayed: the limit value, the measured
value and the result.
The limit value of 250 000 Ω is pre-assigned. If the value measured on the
resistor is greater than or equal to the limit value, the circuit is assessed as
open.
Example: limit value 250 000 Ω
measured value 119.3 Ω
result: No open circuit
5-4 Operating Manual: PSS SB TESTER
Separate tests: Short circuits between the bus cable wires
Abbreviations for these separate tests in the “Results” window:
• KS CAN_H/Vcc
• KS CAN_L/Vcc
• KS CAN_H/CAN_GND
• KS CAN_L/CAN_GND
• KS CAN_H/CAN_SHLD
• KS CAN_L/CAN_SHLD
Test for short circuit between the bus cable wires.
The PSS SB TESTER measures the resistance between the wires.
In the detailed display of results from these separate tests, three pieces of
information are displayed: the limit value, the measured value and the
result.
The limit value of 170 Ω is pre-assigned. If the value measured at the
resistor is less than or equal to the limit value, a short circuit is detected.
Example: limit value 170 Ω
measured value 0 Ω
result: short circuit
INFORMATION
You can use the length measurement to establish the location of a short
circuit between CAN_H and CAN_L, see the section entitled “Length
measurement”.
Operating Manual: PSS SB TESTER 5-5
Tests/Measurements
Screening test
The screening test can be used to check for breaks in the cable screening.
You can therefore determine whether the cable screening is attached
correctly to each bus connector.
The screening test corresponds to a resistance measurement between
CAN_H and CAN_SHLD. The PSS SB TESTER is inserted at one end of
SafetyBUS p, while at the other end a plug is inserted, which produces a
short circuit between CAN_H and CAN_SHLD. If the value measured at
the resistor is greater than the pre-assigned limit value of 200 Ω, an open
circuit is detected.
NOTICE
The connection test must be performed before the screening test. This is
the only way to be sure that there are no short circuits, which would
corrupt the result of the screening test.
Performing the screening test
• Add the PSS SB TESTER and the shorting plug to SafetyBUS p as
shown in Fig. 5-2.
• Switch on the PSS SB TESTER.
• Highlight the symbol in the “Start” window and press VAL.
• The “SafetyBUS p” window opens, in which you can select the test/
measurement. Use the arrow keys to move the cursor to the symbol for
“Screening test” and press VAL.
• The following question is displayed: “SafetyBUS p is switched off?”.
Make sure that SafetyBUS p is switched off, i.e. all devices on
SafetyBUS p must be switched off and there must be no voltage present
on the “Vcc” line.
Then press VAL.
The PSS SB TESTER then checks whether “Vcc” is without voltage. If this
is the case, the test is performed and the following message appears on
the display: “Screening test in progress”.
5-6 Operating Manual: PSS SB TESTER
Tested screening
Bus
subscribers
Terminating
resistor
Shorting
plug
Terminating
resistor
F2F1 F3
HLPESC VAL
ON
OFF
Bus
subscribers
Terminating
resistor
F2F1 F3
HLPESC VAL
ON
OFF
Tested
screening
Shorting
plug
Fig. 5-2: Screening test
Operating Manual: PSS SB TESTER 5-7
Tests/Measurements
If voltage is present at “Vcc”, the test will not be carried out because the
test results could be corrupted or the Tester could be damaged.
NOTICE
While the screening test is in progess, no voltage must be supplied to the
“Vcc” pin and SafetyBUS p must not be switched on, otherwise there is the
risk of the test results being corrupted or the Tester being damaged.
When the test is complete, three pieces of information are displayed: the
limit value, the measured value and the result.
The limit value of 200 Ω is pre-assigned. If the value measured at the
resistor is greater than or equal to the limit value, an open circuit is
detected.
Example: limit value 200 Ω
measured value 10 Ω
result: no open circuit
5-8 Operating Manual: PSS SB TESTER
Length measurement
The length measurement can be used to establish the length of bus lines
longer than 25 m.
The Tester measures the runtime of a pulse on the bus line and uses this
to calculate the cable runs. The basis for the calculation is the cable’s
signal runtime.
The ex-works setting for the signal runtime is 4.5 ns/m. This value is valid
for the Pilz standard cable for SafetyBUS p (order no. 311 070). If you use
a cable with a different signal runtime, you will need to amend the set
value. See the “Operation” chapter, section entitled “Commissioning”.
INFORMATION
If the following devices are connected to SafetyBUS p:
• PSS(1) SB CPU up to Version 2.1
• PSS SB 3006 IBS-S up to Version 1.8
• PSS SB 3006 DP-S up to Version 1.5
• PSS SB 3006 CN-A up to Version 1.2
• PSS SB 3056 up to Version 1.8
• PSS SB ROUTER up to Version 1.1
• PSS SB DI8O8 up to Version 1.6
• PSS SB DI16 up to Version 1.4
the measured value will deviate from the actual physical cable runs by 1.5
m per device. However, the measured cable runs correspond to the
effective electrical cable runs on SafetyBUS p, i.e. the cable runs that are
the key factor in selecting the transmission rate.
Operating Manual: PSS SB TESTER 5-9
Tests/Measurements
The bus topology must be taken into account in the measurement:
• Main line without stub lines
The PSS SB TESTER is connected to one end of the bus line. The
terminating resistors at both ends of the bus line must be removed.
Measured cable runs
Bus
subscribers
Remove
terminating resistor
Remove
terminating resistor
F2F1 F3
HLPESC VAL
ON
OFF
Fig. 5-3: Main line without stub lines
5-10 Operating Manual: PSS SB TESTER
• Main line with stub lines
It is not possible to perform a length measurement on a main line with
stub lines. The stub lines have to be removed.
Measured cable runs
Bus
subscribers
Remove
Remove
stub line
terminating resistor
F2F1 F3
HLPESC VAL
ON
OFF
Separate
terminating resistor
Fig. 5-4: Main line with stub lines
Operating Manual: PSS SB TESTER 5-11
Tests/Measurements
• Main line with Bridge or Router
Bus
Measured cable runs
subscribers
Remove
F2F1 F3
HLPESC VAL
ON
OFF
terminating resistor
Fig. 5-5: Main line with Bridge or Router
• Main line with sub branches
Measured cable runs
PSS SB Router1
PSS SB BRIDGE
Bus
subscribers
Remove
terminating
resistor
F2F1 F3
HLPESC VAL
ON
OFF
PSS SB Router1
PSS SB BRIDGE
PSS SB ACTIVE JUNCTION BASIS0
Remove
terminating
resistor
Fig. 5-6: Main line with sub branches
5-12 Operating Manual: PSS SB TESTER
Performing the length measurement
• Add the PSS SB TESTER to SafetyBUS p as shown in Figs. 5-3 to 5-6.
• Switch on the PSS SB TESTER.
• Highlight the symbol in the “Start” window and press VAL.
• The “SafetyBUS p” window opens, in which you can select the test/
measurement. Use the arrow keys to move the cursor to the symbol for
“Length measurement” and press VAL.
• The following question is displayed: “SafetyBUS p is switched off?”.
Make sure that SafetyBUS p is switched off, i.e. all devices on
SafetyBUS p must be switched off.
On the PSS SB BRIDGE, both sides of the Bridge must be without
voltage.
• Press VAL.
When the test is complete, a measured curve appears on the display.
Fig. 5-7 shows a typical measured curve.
Fig. 5-7: Typical measured curve for length measurement
Operating Manual: PSS SB TESTER 5-13
Tests/Measurements
Function of the keys in this window:
F1: Activate/deactivate cursor (symbol <–>)
F2: Enlarge view (symbol Z+)
F3: Reduce view (symbol Z-)
< >: Move view to left or right
VAL: Perform new measurement
ESC: Close window
The key factor in the measured curve is the falling edge.
• Press F1. The cursor is inserted. Using the arrow keys, move the cursor
approximately to the start of the falling edge.
• Press F1 to deactivate the cursor. The view can only be enlarged when
the cursor is deactivated.
• Now use F2 and F3 to adjust the view so that the falling edge is clearly
visible.
• Press F1 to reactivate the cursor. Now move the cursor precisely to the
start of the falling edge. The cable runs are then displayed beneath the
measured curve.
Cursor
Fig. 5-8: Cursor position to determine the cable runs
5-14 Operating Manual: PSS SB TESTER
If there is a short circuit on SafetyBUS p between CAN_H and CAN_L, the
measured curve will deviate from the typical curve: a step is visible within
the measured curve. On long bus lines, you will need to enlarge the view to
make the step visible.
You can establish the location of the short circuit from this step. To do this,
the cursor must be positioned on the rising edge of the step.
Cursor
Step
Fig. 5-9: Cursor position to determine the location of a short circuit
The measured curve also shows if a terminating resistor was not removed
when the measurement was made: the measured curve is constant over
the whole measuring range of 6.7 km.
Fig. 5-10: Measured curve when terminating resistor is not removed
Operating Manual: PSS SB TESTER 5-15
Tests/Measurements
Signal test
The signal test comprises the following separate tests:
• Measures the voltage at Vcc
• Tests the transmission rate for all devices
• Tests the electrical signal level on the lines CAN_H and CAN_L for all
devices
• Tests the signal edges on the lines CAN_H and CAN_L for all devices
Performing the signal test
Before performing the signal test, the transmission rate must be set in the
PSS SB TESTER.
• Switch on the PSS SB TESTER.
• Highlight the symbol in the “Start” window and press VAL.
• A window opens, in which you can set the transmission rate. Use the
arrow keys to move the cursor to the symbol for the required
transmission rate and press VAL.
You can now perform the signal test. SafetyBUS p must be in operation.
• Add the PSS SB TESTER at any point within SafetyBUS p.
• Highlight the symbol in the “Start” window and press VAL.
• The “SafetyBUS p” window opens, in which you can select the test/
measurement. Use the arrow keys to move the cursor to the symbol for
“Signal test” and press VAL.
5-16 Operating Manual: PSS SB TESTER
The display will show the message “Signal test in progress” and the value
of the voltage at Vcc. The test may take up to 5 minutes. The test can be
aborted by pressing ESC.
When the test is complete, the “Results” window is opened. This displays a
list showing all the devices on SafetyBUS p, i.e. all the devices that have
been detected.
A code is shown behind each device:
- “v”: the device is error free
- “x”: the test has detected a fault for the device
You can use F2 to switch between the faulty devices.
To look at the result for a device in more detail you can move the cursor to
that device and then press VAL.
The “Device xx” window is opened, which displays the results of the
separate tests for the device.
A code is entered at the end of some lines :
- “v”: no fault detected
- “x”: fault detected
To look at the result of a single test in more detail you can move the cursor
to that test and then press VAL.
You can return to the previous window by pressing ESC.
Separate test: Measuring the voltage at Vcc
The voltage at Vcc is measured once at the start of the signal test. This
value is displayed while the signal test is running.
Operating Manual: PSS SB TESTER 5-17
Tests/Measurements
Separate test: Testing the transmission rate
Abbreviation for this separate test in the “Device xx” window:
Transmission rate
Each device on SafetyBUS p is tested to ensure it has the correct
transmission rate.
In the detailed display of the result from this separate test, four pieces of
information are displayed: the lower limit, the upper limit, the measured
value and the result.
The limit values are pre-assigned for each transmission rate that can be
set on SafetyBUS p.
Transmission rate
in kBit/s
20
50
125
250
500
If the value measured for the transmission rate lies between the upper and
lower limit, the transmission rate is assessed as good.
Example: lower limit: 247.5 KBit/s
upper limit: 252.5 KBit/s
measured value: 250,000 KBit/s
result: OK
Lower limit
in kBit/s
19.80
49.50
123.75
247.50
495.00
Upper limit
in kBit/s
20.20
50.50
126.25
252.50
505.00
5-18 Operating Manual: PSS SB TESTER
Separate tests: Testing the electrical signal level
Abbreviations for these separate tests in the “Device xx” window:
• Rec. Level CAN_H
• Dom. Level CAN_H
• Rec. Level CAN_L
• Dom. Level CAN_L
Each device on SafetyBUS p is tested to ensure the signals it is sending
have the correct level. The recessive and dominant level of CAN_H and
CAN_L are tested.
In the detailed display of the result from these separate tests, four pieces
of information are displayed: the lower limit, the upper limit, the measured
value and the result.
The limit values for the recessive and dominant level are pre-assigned:
Level
Recessive level
Lower limit
in VDC
2.0
Upper limit
in VDC
3.0
CAN_H
Dominant level
2.8
4.5
CAN_H
Recessive level
2.0
3.0
CAN_L
Dominant level
0.5
2.3
CAN_L
If the value measured for the level lies between the upper and lower limit,
the level is assessed as “OK”.
If the level is incorrect, an error message is issued.
Operating Manual: PSS SB TESTER 5-19
Tests/Measurements
Example for “Dom. Level CAN_H”:
lower limit: 2.8 V
upper limit: 4.5 V
measured value: 3.5 V
test result: OK
Separate tests: Testing the signal edges
Abbreviations for these separate tests in the “Device xx” window:
• Rising edge CAN_H
• Falling edge CAN_H
• Rising edge CAN_L
• Falling edge CAN_L
Each device on SafetyBUS p is tested to ensure the signals it is sending
have the correct edges. The rise and fall time of the signals on CAN_H and
CAN_L are measured.
Mean signal - 10 %
Mean signal +10 %
Rise time Fall time
Fig. 5-11: Rise/fall time
The measured time is shown in the detailed display of the result from
these separate tests.
Example for “Rising edge CAN_H”:
measured value: 86 ns
5-20 Operating Manual: PSS SB TESTER
Real-time mode
Real-time mode comprises the following measurements:
• Bus load
• Error rate
• Failure rate
• Number of errors
Performing the real-time measurement
Before performing the real-time measurement, the transmission rate must
be set in the PSS SB TESTER.
• Switch on the PSS SB TESTER.
• Highlight the symbol in the “Start” window and press VAL.
• A window opens, in which you can set the transmission rate. Use the
arrow keys to move the cursor to the symbol for the required
transmission rate and press VAL.
You can now perform the real-time measurement. SafetyBUS p must be in
operation.
• Add the PSS SB TESTER at any point within SafetyBUS p.
• Highlight the symbol in the “Start” window and press VAL.
• The “SafetyBUS p” window opens, in which you can select the test/
measurement. Use the arrow keys to move the cursor to the symbol for
“Real-time mode” and press VAL.
The “Real-time mode” window appears and the results of the various
measurements are displayed.
The test can be aborted by pressing ESC.
Press F1 to reset the number of errors.
Operating Manual: PSS SB TESTER 5-21
Tests/Measurements
Notes
5-22 Operating Manual: PSS SB TESTER
Software
To transfer the test results from the PSS SB TESTER to a PC you will need
to install the Upload-Software.
System requirements
• Operating system: Windows 98, ME, 2000 or XP
• Hard drive: Approx. 1 MB of available disk space
• USB port
Installation
• Insert the CD into the CD drive.
• Go to the “Upload-Software” directory and call up the file “setup.exe”.
• Follow the on-screen instructions.
Starting the software
Open the directory in which you installed the Upload-Software and call up
the file “Results_MT.exe”.
Fig. 6-1: Upload-Software
Chapter 4 describes how to upload the test results, in the section entitled
“Uploading the test results to a PC”.
Operating Manual: PSS SB TESTER 6-1
Software
Notes
6-2 Operating Manual: PSS SB TESTER
Fault Diagnostics
If you detect faults on SafetyBUS p, the following tables may help you to
find the source of the fault and to rectify it.
Connection test
Problem
Resistance between
CAN_H and CAN_L
< 50 Ω
Resistance between
CAN_H and CAN_L
> 85 Ω
Short circuit detected
Length measurement
Problem
Error message
“Measurement not OK” is
displayed
Cause
A terminating resistor has an
invalid value or there are too
many terminating resistors
present
A terminating resistor is
missing or has an invalid value
Short circuit
Cause
Length of bus line < 25 m
Correcting the problem
Check the terminating
resistors, both terminating
resistors must have a value of
120 Ω
Check the terminating
resistors, both terminating
resistors must have a value of
120 Ω
Check the wiring
Correcting the problem
Cable runs < 25 m cannot be
measured
Operating Manual: PSS SB TESTER 7-1
Fault Diagnostics
Signal test
Problem
Device’s signal level lies
outside the measurable
range
Error message “Problem
CAN_L” is displayed
Error message
“Measurement not OK” is
displayed
Device’s transmission
rate is incorrect
Error message "Network
config"
Cause
Connection is faulty or device
is defective
Short circuit between CAN_L
and earth
Connection between PSS SB
TESTER and SafetyBUS p is
interrupted or SafetyBUS p is
inactive
Device is defective
The transmission rate set on
the PSS SB TESTER may not
match the actual transmission
rate on SafetyBUS p
Correcting the problem
Check the connection. If
nothing helps, change the
device
Check line from CAN_L
Check whether SafetyBUS p
is active (SafetyBUS p status
LED on the PSS and devices
must be lit), check the
connection
Change the device
Check the transmission rate
setting
Real-time mode
Problem
Failure rate (fr/s) > 0
Cause
The transmission rate set on
the PSS SB TESTER may not
match the actual transmission
rate on SafetyBUS p
Correcting the problem
Check the transmission rate
setting
7-2 Operating Manual: PSS SB TESTER
Technical Details
Electrical data
Supply voltage Battery: Ni-Cd 4.8 VDC, 2100 mAh
Charger: 110/230 VAC, 50 Hz
Display
Display type Single-colour graphic LC display
Resolution 128 x 64 pixels
Contrast adjustment Yes
Back lighting Yes
Operator elements
Keyboard type Short-stroke keys with positive feedback
No. of keys 3 function keys,
3 special keys (ESC, HLP, VAL),
4 cursor keys
Interfaces
Interfaces SafetyBUS p,
USB
Environmental data
Protection type IP30 with battery inserted
Ambient temperature 0 ... 50 °C
Storage temperature -20 ... +70 °C
Condensation Not permitted
EMC EN 61326-1, EN 61000-4-2/-3,
EN 55022 A
Mechanical data
Housing material ABS
Weight 510 g
Dimensions (H x W x D) 232 x 97 x 52 mm
Operating Manual: PSS SB TESTER 8-1
Technical Details
Notes
8-2 Operating Manual: PSS SB TESTER
Hotline
+49 711 3409-444
...
In many countries we are
represented by sales partners.
Please refer to our Homepage
for further details or contact our
headquarters.
Pilz GmbH & Co. KG
Sichere Automation
Felix-Wankel-Straße 2
73760 Ostfildern, Germany
Telephone: +49 711 3409-0
Telefax: +49 711 3409-133
E-Mail: pilz.gmbh@pilz.de
www
www.pilz.com
20 757-03-01/05 Printed in Germany
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